1 /* 2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2016 SAP SE. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #ifndef CPU_S390_VM_FRAME_S390_INLINE_HPP 27 #define CPU_S390_VM_FRAME_S390_INLINE_HPP 28 29 #include "code/codeCache.hpp" 30 #include "code/vmreg.inline.hpp" 31 #include "utilities/align.hpp" 32 33 // Inline functions for z/Architecture frames: 34 35 inline void frame::find_codeblob_and_set_pc_and_deopt_state(address pc) { 36 assert(pc != NULL, "precondition: must have PC"); 37 38 _cb = CodeCache::find_blob(pc); 39 _pc = pc; // Must be set for get_deopt_original_pc(). 40 41 _fp = (intptr_t *) own_abi()->callers_sp; 42 43 address original_pc = CompiledMethod::get_deopt_original_pc(this); 44 if (original_pc != NULL) { 45 _pc = original_pc; 46 _deopt_state = is_deoptimized; 47 } else { 48 _deopt_state = not_deoptimized; 49 } 50 51 assert(((uint64_t)_sp & 0x7) == 0, "SP must be 8-byte aligned"); 52 } 53 54 // Constructors 55 56 // Initialize all fields, _unextended_sp will be adjusted in find_codeblob_and_set_pc_and_deopt_state. 57 inline frame::frame() : _sp(NULL), _unextended_sp(NULL), _fp(NULL), _cb(NULL), _pc(NULL), _deopt_state(unknown) {} 58 59 inline frame::frame(intptr_t* sp) : _sp(sp), _unextended_sp(sp) { 60 find_codeblob_and_set_pc_and_deopt_state((address)own_abi()->return_pc); 61 } 62 63 inline frame::frame(intptr_t* sp, address pc) : _sp(sp), _unextended_sp(sp) { 64 find_codeblob_and_set_pc_and_deopt_state(pc); // Also sets _fp and adjusts _unextended_sp. 65 } 66 67 inline frame::frame(intptr_t* sp, address pc, intptr_t* unextended_sp) : _sp(sp), _unextended_sp(unextended_sp) { 68 find_codeblob_and_set_pc_and_deopt_state(pc); // Also sets _fp and adjusts _unextended_sp. 69 } 70 71 // Generic constructor. Used by pns() in debug.cpp only 72 #ifndef PRODUCT 73 inline frame::frame(void* sp, void* pc, void* unextended_sp) : 74 _sp((intptr_t*)sp), _unextended_sp((intptr_t*)unextended_sp), _cb(NULL), _pc(NULL) { 75 find_codeblob_and_set_pc_and_deopt_state((address)pc); // Also sets _fp and adjusts _unextended_sp. 76 } 77 #endif 78 79 // template interpreter state 80 inline frame::z_ijava_state* frame::ijava_state() const { 81 z_ijava_state* state = (z_ijava_state*) ((uintptr_t)fp() - z_ijava_state_size); 82 assert(state->magic == (intptr_t) frame::z_istate_magic_number, 83 "wrong z_ijava_state in interpreter frame (no magic found)"); 84 return state; 85 } 86 87 inline BasicObjectLock** frame::interpreter_frame_monitors_addr() const { 88 return (BasicObjectLock**) &(ijava_state()->monitors); 89 } 90 91 // The next two funcions read and write z_ijava_state.monitors. 92 inline BasicObjectLock* frame::interpreter_frame_monitors() const { 93 return *interpreter_frame_monitors_addr(); 94 } 95 inline void frame::interpreter_frame_set_monitors(BasicObjectLock* monitors) { 96 *interpreter_frame_monitors_addr() = monitors; 97 } 98 99 // Accessors 100 101 // Return unique id for this frame. The id must have a value where we 102 // can distinguish identity and younger/older relationship. NULL 103 // represents an invalid (incomparable) frame. 104 inline intptr_t* frame::id(void) const { 105 // Use _fp. _sp or _unextended_sp wouldn't be correct due to resizing. 106 return _fp; 107 } 108 109 // Return true if this frame is younger (more recent activation) than 110 // the frame represented by id. 111 inline bool frame::is_younger(intptr_t* id) const { 112 assert(this->id() != NULL && id != NULL, "NULL frame id"); 113 // Stack grows towards smaller addresses on z/Architecture. 114 return this->id() < id; 115 } 116 117 // Return true if this frame is older (less recent activation) than 118 // the frame represented by id. 119 inline bool frame::is_older(intptr_t* id) const { 120 assert(this->id() != NULL && id != NULL, "NULL frame id"); 121 // Stack grows towards smaller addresses on z/Architecture. 122 return this->id() > id; 123 } 124 125 inline int frame::frame_size(RegisterMap* map) const { 126 // Stack grows towards smaller addresses on z/Linux: sender is at a higher address. 127 return sender_sp() - sp(); 128 } 129 130 // Ignore c2i adapter frames. 131 inline intptr_t* frame::unextended_sp() const { 132 return _unextended_sp; 133 } 134 135 inline address frame::sender_pc() const { 136 return (address) callers_abi()->return_pc; 137 } 138 139 // Get caller pc, if caller is native from stack slot of gpr14. 140 inline address frame::native_sender_pc() const { 141 return (address) callers_abi()->gpr14; 142 } 143 144 // Get caller pc from stack slot of gpr10. 145 inline address frame::callstub_sender_pc() const { 146 return (address) callers_abi()->gpr10; 147 } 148 149 inline address* frame::sender_pc_addr() const { 150 return (address*) &(callers_abi()->return_pc); 151 } 152 153 inline intptr_t* frame::sender_sp() const { 154 return (intptr_t*) callers_abi(); 155 } 156 157 inline intptr_t* frame::link() const { 158 return (intptr_t*) callers_abi()->callers_sp; 159 } 160 161 inline intptr_t** frame::interpreter_frame_locals_addr() const { 162 return (intptr_t**) &(ijava_state()->locals); 163 } 164 165 inline intptr_t* frame::interpreter_frame_bcp_addr() const { 166 return (intptr_t*) &(ijava_state()->bcp); 167 } 168 169 inline intptr_t* frame::interpreter_frame_mdp_addr() const { 170 return (intptr_t*) &(ijava_state()->mdx); 171 } 172 173 // Bottom(base) of the expression stack (highest address). 174 inline intptr_t* frame::interpreter_frame_expression_stack() const { 175 return (intptr_t*)interpreter_frame_monitor_end() - 1; 176 } 177 178 inline intptr_t* frame::interpreter_frame_tos_at(jint offset) const { 179 return &interpreter_frame_tos_address()[offset]; 180 } 181 182 183 // monitor elements 184 185 // End is lower in memory than begin, and beginning element is oldest element. 186 // Also begin is one past last monitor. 187 188 inline intptr_t* frame::interpreter_frame_top_frame_sp() { 189 return (intptr_t*)ijava_state()->top_frame_sp; 190 } 191 192 inline void frame::interpreter_frame_set_top_frame_sp(intptr_t* top_frame_sp) { 193 ijava_state()->top_frame_sp = (intptr_t) top_frame_sp; 194 } 195 196 inline void frame::interpreter_frame_set_sender_sp(intptr_t* sender_sp) { 197 ijava_state()->sender_sp = (intptr_t) sender_sp; 198 } 199 200 #ifdef ASSERT 201 inline void frame::interpreter_frame_set_magic() { 202 ijava_state()->magic = (intptr_t) frame::z_istate_magic_number; 203 } 204 #endif 205 206 // Where z_ijava_state.esp is saved. 207 inline intptr_t** frame::interpreter_frame_esp_addr() const { 208 return (intptr_t**) &(ijava_state()->esp); 209 } 210 211 // top of expression stack (lowest address) 212 inline intptr_t* frame::interpreter_frame_tos_address() const { 213 return *interpreter_frame_esp_addr() + 1; 214 } 215 216 inline void frame::interpreter_frame_set_tos_address(intptr_t* x) { 217 *interpreter_frame_esp_addr() = x - 1; 218 } 219 220 // Stack slot needed for native calls and GC. 221 inline oop * frame::interpreter_frame_temp_oop_addr() const { 222 return (oop *) ((address) _fp + _z_ijava_state_neg(oop_tmp)); 223 } 224 225 // In keeping with Intel side: end is lower in memory than begin. 226 // Beginning element is oldest element. Also begin is one past last monitor. 227 inline BasicObjectLock * frame::interpreter_frame_monitor_begin() const { 228 return (BasicObjectLock*)ijava_state(); 229 } 230 231 inline BasicObjectLock * frame::interpreter_frame_monitor_end() const { 232 return interpreter_frame_monitors(); 233 } 234 235 inline void frame::interpreter_frame_set_monitor_end(BasicObjectLock* monitors) { 236 interpreter_frame_set_monitors((BasicObjectLock *)monitors); 237 } 238 239 inline int frame::interpreter_frame_monitor_size() { 240 // Number of stack slots for a monitor 241 return align_up(BasicObjectLock::size() /* number of stack slots */, 242 WordsPerLong /* Number of stack slots for a Java long. */); 243 } 244 245 inline int frame::interpreter_frame_monitor_size_in_bytes() { 246 // Number of bytes for a monitor. 247 return frame::interpreter_frame_monitor_size() * wordSize; 248 } 249 250 inline int frame::interpreter_frame_interpreterstate_size_in_bytes() { 251 return z_ijava_state_size; 252 } 253 254 inline Method** frame::interpreter_frame_method_addr() const { 255 return (Method**)&(ijava_state()->method); 256 } 257 258 inline oop* frame::interpreter_frame_mirror_addr() const { 259 return (oop*)&(ijava_state()->mirror); 260 } 261 262 // Constant pool cache 263 264 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const { 265 return (ConstantPoolCache**)&(ijava_state()->cpoolCache); 266 } 267 268 // entry frames 269 270 inline intptr_t* frame::entry_frame_argument_at(int offset) const { 271 // Since an entry frame always calls the interpreter first, 272 // the parameters are on the stack and relative to known register in the 273 // entry frame. 274 intptr_t* tos = (intptr_t*) entry_frame_locals()->arguments_tos_address; 275 return &tos[offset + 1]; // prepushed tos 276 } 277 278 inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const { 279 return (JavaCallWrapper**) &entry_frame_locals()->call_wrapper_address; 280 } 281 282 inline oop frame::saved_oop_result(RegisterMap* map) const { 283 return *((oop*) map->location(Z_R2->as_VMReg())); // R2 is return register. 284 } 285 286 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) { 287 *((oop*) map->location(Z_R2->as_VMReg())) = obj; // R2 is return register. 288 } 289 290 inline intptr_t* frame::real_fp() const { 291 return fp(); 292 } 293 294 #endif // CPU_S390_VM_FRAME_S390_INLINE_HPP